I am about to trade my 2011 Elantra Limited in for a Focus (can not stand lack of a manual) but have been happy with my MPG. I drive 60 miles to work on I-15 between Provo and Salt Lake City at 65 to 70MPH and in the spring and summer have seen my onboard show as high as 47.3MPG. I know they are not as accurate as testing with the tank but I do get around 40MPG even with fills often. My wife on the other hand averages about 33MPG on the same drive, though she is awful with jerky driving. That said the car is underpowered and not alot of fun to drive, so it is gone this month.